Wood-sawing machine



S. S. SEE.

WOOD SAWING MACHINE.

APPLICATION FILED FEB. 11. 191.9.

1,356,019. Patented Oct. 19,1920.

4 SHEETSSHEET I.

S. 8. SEE.

WOOD SAWING MACHINE.

APPLICATION FILED FEB. H. 1919. $1,356,019. Patented Oct. 19,1920.

4 SHEETS-SHEET 2.

amwzutoz witnqoo s. 3. SEE. WOOD SAWING MACHINE.

APPLICATION FILED FEB. 11, [919.

1,356,019." Patented Oct. 19,1920.

4 SHEETSSHEET 3.

t' c Jo kw o |!1 l W11 Xmas 62% z? t W Y wanna,

S. S. SEE.

WOOD SAWING MACHINE.

APPLICATION FILED FEB. 11. 1919.

4 SHEETSSHEET 4.

auucnto'c mama SILAS S. SEE, 0F ROANOKE, VIRGINIA.

WOOD-SAWING MACHINE.

laconic.

Specification of Letters Patent.

Patented Oct. 19,1920;

Application filed February 11, 1919. Serial No. 276,370.

1- '0 all w 1 mm 2'25 may concern:

lie it known that l, SILAS S. Sun, a citizen of the ilnited States, residing at Roanoke, in the county of Roanoke and State of Virginia, have invented certain new and useful improvements in lVood-Sawing Ma chines; and i do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

T his invention relates to machines for'sawmg circular stock of a perforated or solid nature, and contemplates more especially an automatic hole sawing mechanism for increasing the production of wooden dust guards used in conjunction with journal boxes.

An object of the present invention is the provision of automatic machine, includii in combination means for rapidly perating wooden stock without splintering or chipping the same, means'for effectively ting-the product out, and means for colchug the waste port-ion of the stock.

. Another object of the invention is to produce an automatic machine having a novel MW 1 i 1 1 r1 t t 1 A t 4-1 a. coco cesl ner o pene We and cu we ck so to prevent the usual accumulation of sawdust with its consequent clogging and non-cutting tendencies, and to also eject the portion out from the stock.

Another objectef the invention resides in the production of a work support in which various sizes of steel; can be readily ace mmodated, and adjusted for penetration by the saw.

The invention further contemplates novel and compact means for driving the machine in tii'ned and. automatic relation, and certain other features of construction hereinafter described and pointed out in the appended claims.

In the accompanying drawings, illustrating an embodiment of the invention and in which corresponding reference characters designate similar parts:

Figure 1 is a side elevation of my improved machine;

Fig. 2 is an enlarged vertical sectional elevation through the work or stock supporting carriage, the cutting saw being shown in side elevation;

Fig. 3 is an end elevation;

7 stock.

Fig. 4 is vertical transverse sectional view on the line i l of Fig. 1;

Fig. 5 is a detail similar sectional View through the stock supporting carriage, illustrating a portion of the stock material positioned therein, and ready to be cut;

Fig. 6 is a detail horizontal sectional view showing the stock in position for sawing;

Fig. 7 is an enlarged detail section through the upper portion of the stock supporting carriage illustrating the adjusting means for accommodating various sizes of stock, and

g- 8 is an enlarged sectional view through the cutting saw.

The invention has been primarily designed to expedite the production of dust guards used in the journal boxes of rolling t is applicable, however, for use in connection with the manufacture of other perforated and disk like structures, and I do not limit myself to the exact use herein pecified.

Broadly stated, the invention comprises, among other things, a movable carriage or work support arranged to receive thestocl:

reciprocation into and out of contact with a revolving saw of the drum or tubular type, means for ejecting the product from said work support after the sawing operation, and means for receiving the waste or central portion cut by the saw, by directing same through he chambered or hollow head of the work support into a chute for collection.

In practice this operation is termed holesawing, the central disk or waste element collected being that portion of the stock removed by the sawing operation, and the perforated stock or dust guard herein being that portion of the product from which the disk has been out. As both of these products can be readily produced, I do not limit the invention to the specific production of either. 7

Referring to the drawings, the machine includes a frame or bed 1, upon which is slidably mounted the work support or carriage 2, a revolubly mounted saw 3 cooperatively positioned with relation to -ii carriage, and interconnected driving means therefor, to be hereinafter described.

The bed 1 is of channel formation in cross section and is preferably supported upon standards or legs 4i which may be bolted thereto, as shown at 5 in Fig. 2. Guide rails 6 are provided upon the upper flanges of the channel sections of the bed 1 and receive guide-shoes 7 formed as a part of the work supporting carriage 2, as clearly shown in Fig. 4;. The upper portions of the rails 6 may be beveled, as indicated at 8, and the lower portions thereof suitably machined for sliding contact with wear plates 9 adjustably secured to the guide shoes 7 by means of screws 10.

The work supporting carriage 2 is de-.

signed to receive the stock material from which the product is to be cut, and comprises a chambered or hollow head section 11 through which the waste portion of the product passes, a relatively narrow chamber or pocket 12 into which the stock to be cut is inserted, and a further constricted dome portion 13 to which the reciprocating means for said work supporting carriage is connected.

The lower portion of the chambered head section 11 is open as at lei, and is provided with suitable hand holes 15 upon each side thereof for inspection and other purposes.

The narrow chamber or stock receiving pocket 12 is formed by the interposi ion of spaced partitions, one of which, for purposes herein will be termed a back board 16, and the other of which will be styled a. front plate 17. The back board 16 is se cured within beveled recesses 18, formed in the head section 11, and is provided with a central opening 19 of a diameter slightly in excess of that of the tubular saw. It will be understood that back boards with different size openings may be readily inserted into the beveled recesses 18, depending upon the relative diameter of the saw being used. The purpose of this back board, which is made of wood or similar material, is to prevent the splintering or chipping oi the stock as the saw finishes the cut. The ref ive importance of the size of the opening in the back board to that of the sa v, will therefore be apparent. The front plate 17 is preferably formed of metal, it being relatively thinner, as shown, and is secured to the head section 11 by means of screws 20. An opening 21 is formed therein, being of a sufficient size to permit the passage of the saw therethrough. The clearance afforded the saw is very slight however, the purpose of the front plate 17 being to also prevent the splintering or unnecessary chipping as the saw penetrates the stock. This front plate can be readily removed and another with a different size opening therein, substituted, depending upon the diineter of the saw bein used. it will also be obvious that various thicknesses of stock material can be accommodated by adjusting the screw fastening means 20, when securing the front plate.

Cooperating with the back board 16 and front plate 17, forming the pocket 12, are upper and lower guide bars 22 and 23 respectively, the purpose of which is to center the stock material with relation to the saw and alined openings 19 and 21. The upper bar 22 is adjustably positioned within the pocket 12 by means of a pair of hand screws 2a, and the lower bar 23 is likewise positioned by means of a pair of hand screws 25. Each hand screw is secured to their respective guide bars by means of an upset countersunk end 26 and flange or collar 27, see Fig. '7. Each hand screw also passes through screw threaded portions in the head section 11, and when turned, will serve to elevate or lower the respective guide bars 22 and 23, as will be readily understood.

The means for laterally limiting the stock material when inserted in the pocket 12 includes a bracket 28 secured to the head section 11, by means of bolts 29, see Fig. 6.

Adjustably positioned in the bracket 28 is a stop rod 30 designed to extend therethrough, and into the pocket 12 for limiting the movement of the stock when being inserted. A set screw 31 is provided in the bracket and is designed to bear against the stop rod 30 for holding same in fixed position after determining the central adjustment of the stock with relation to the saw and alined openings 19 and 21.

A product ejecting means is also carried by said bracket and comprises a spring actuated plunger 82 adapted to strike the product after being sawed and force same from the pocket 12. This plunger 32 is preferably constructed of hard wood or similar material, and is provided with a hemispherical or curved head 33, against which the upper end 3% of an actuating le ver 35 bears. A spring 36 is interposed between the head 33 and the side wall oi the bracket 28 and operates to return the plunger after being actuated by the lever in a manner now to be described.

The lever 35 is pivotally supported in a bracket 36 bolted to the side of the bed i by means of bolts 37. The lower end 38 of said lever extends downwardly into the path of a cam 39 carried by the hub or sleeve portion of a grooved cam to be presently described as loosely mounted on a shaft 40 mounted intermediate the standards l in bearings 41.

In operation the lower end 38 of the lever 35 bear. against the cam.89 through the action of the spring 36 on the upper end of said lever, thereby rocking the lever and in turn imparting movement to the ejecting plunger 82 which strikes the product and forces same from the pocket 12.

The means for reciprocating the stock we ried by the work supporting carriage into and out of engagement with the saw, comprises a lever 42 pivotally mounted at 43 in a bracket 44 secured to one of the standards or legs 4, as at 45. This lever 42 is connected to the restricted hollow portion of the head section by means of a bolt 46 which passes through a slot 47 formed in the upper end of said lever as best shown in Fig. 2.. A roller 48 is carried by the lower end of said lever 42 and is designed to operate in a grooved cam .49, loosely mounted upon the shaft 40 hereinbefore referred to.

By this construction it will be obvious that as the roller 48 rides upon the relative high and low portions in the cam grooves, the work supporting carriage will be reciprocat ed. As shown, one complete reciprocation of the carriage is given for every complete revolution of the shaft 40. The grooved cam 49 is provided with a hub or sleeve portion 50 upon the outer end of which is formed a clutch member 51 designedto cooperate with. a mating clutch member 52 connected to the shaft 40, by means of a relatively movable collar 53 which in turn is normally secured to the shaft 40 by means of a set screw 54. The clutch member 52 is slidably keyed to said collar 53 and is controlled by a clutch lever 55, the forked end 56 of which is secured to said clutch member 52 in the usual manner. The clutch lever 55 is pivotally supported at 57 on a bracket 58 secured to and depending from the under side of the bed 1, see Fig. 4.

In operation it will be seen that as long as the clutch members 51 and 52 are engaged reciprocating movement is regularly transmitted to the work supporting carriage. However, should it be found expedient to control the movement of the work supporting carriage with relation to the time involved in positioning the stock to be cut, the clutch lever 55 may be readily operated, for disengaging the clutch members 51 and 52 during which time the said work supporting carriage is stopped.

The cutting saw 59 is of the drum type and is revolubly carried by a shaft 60 mount ed in ball or roller bearings suitably housed in casings 61 formed on the bracket support 62, secured to the bed 1 by means of bolts 63. Referring particularly to Fig. 8, the saw comprises a body portion 64 secured to shaft 60 in any suitable manner, and a circular cutting section 65 attached by screws 66 to the aforesaid body portion 64. The cutting section 65 is preferably made of thin tool steel, and is provided with a series of cutting teeth 67, each formed with. a beveled cutting edge 68 and spaced by means of relatively deep slots or notches 69. The beveled or slanting edge 68 of each tooth 1S arranged at an angle to facilitate ready penetration and cutting of the stock, and the spaced slotsor notches 69 are of a propor tional depth and'width to accommodate the cut material with suflicient clearance to prevent clogging of the teeth.

The ejecting means for forcing the central or waste portion of the stock cut by the saw, comprises a plunger 70, and spring 71, the latter being arranged intermediate a flanged head 72 secured to said plunger, and the end of the shaft 60. The plunger is slidably mounted in an opening 73 formed in the end of the shaft 60, and is retained thereby by means of a pin 74 designed to pass through a slot 2 5 formed in the plunger 70. A stock engaging end 76 is provided on the end of the plunger, and is tapered to a point, as shown in Fig. 8.

In operation the ejecting plunger 70 is pushed back against the tension of the spring 71, by reason of the pointed end '76 engaging the stock. As the saw penetrates the stock, the said plunger is pushed farther back, thereby increasing the tension of the spring. When the saw has finished cutting, the plunger will be forced outwardly through the action of the spring 21 and the cut or waste portion ejected into the hollow or chambered portion of the carriage support, from where it will fall through a hopper or a chute 77 for delivery into any suitable form of receiving receptacle.

The hopper or chute 77 is shown secured by flanges and bolts 78 to the bed 1. An upwardly extending back wall 79 and a flared front wall 80 are provided in said hopper to prevent the accidental discharge of the cut portion from the machine. The hopper or chute is preferably turned or curved outwardly of the machine so as to deliver the cut material to one side thereof.

.The driving mechanism for imparting motion to the machine includes a pulley 81 secured tothe saw shaft 60, over which a belt may pass from any suitable source of power, (not shown). Motion is transmitted from the shaft 60 to the lower shaft 40 by means of a series of worms, and worm gears now to be described.

Secured to the end of the shaft G0 is a worm 82 adapted to mesh with a worm gear 83 keyed to the upper end of a vertically disposed shaft 84. The shaft 84 is suitably journaled in bearings formed in the upper and lower housings 85 and 86 secured to and extending from the bed 1 and standard 4 respectively. Each housing 85 and 86 is preferably split, as shown, and the cap section thereof can be readily removed. M I

Keyed to the lower end of the vertical shaft 84 is a worm 87 designed to mesh with a worm gear 88 secured to the shaft 40 here inbefore described. By means of the aforesaid system of gearing, motion is transmitted from the saw shaft 60 to the lower or cam shaft e0 for actuating the work supporting carriage, and product ejecting means heretofore described.

The operation follows:

The material or stock from which the product is out, is positioned in the pocket 2 of the work support. The stop rod 30 is now adjusted, thereby permitting the centering of stock laterally of the machine with relation to the saw. The guide bars 22 and 23 are now adjusted by means of the hand screws 25 for centering the stock vertically with. relation to the saw. The stool: being properly positioned in said pocke 12, clutch lever is operated to engage the clutch members 51 and thereby impartin ro tary movement to the grooved cam which in tr n roclts lover and transmits reciprocating movement to the work supporting carriage. The carriage new moves toward the saw, the beveled cutting edges penetrating the stock, while the outing plunger is retracted against the tension of spring 71.

During the operation the cam 39 is rotating in timed relation, gradually bringing the high portion thcreei into operative con tact with the lower end 38 of the lever 35. Upon the completion of the sawing operation, the lever is actuated by cam 39, thereby forcing the product ejecting plungcr 82 against the product and removing same from the pocket 12. The spring acts to return the plunger 32. in practice the product may be caught by a receptacle or manually received by the operative of the machine. it will be apparent also that as the sawing operation is'con'ipleted, the waste or central portion cut from the product will be immediately pic se into the chambered head of the work supporting carriage, and conveyed through the hopper or chute 77 into a suitable receptacle. The work supporting carriage is now reciprocated away from the cutting saw and receives more stocl: for cutting.

hen it is desired to saw holes in ma terial the length of which would not permit its complete insertion in the pocket 12, the brac ct .48 is removed from the head section, thereby opening both sides of the pocket 12 for the continuous passage of the stock thercthrough, as will be readily understood. In this instance, it may also be advantageous to manually control the reciprocation of the carriage 2 by operating the clutch lever at proper intervals.

From the foregoing it will be apparent that l: have produced a hole sawing machine possessing advantages of construction and use heretofore unknown.

I claim 1. A hole sawing machine of the class described including in combination a frame, a

longitudinally movable carriage having a transversely disposed pocket therein for receiving the stool; from one side thereof, a tubular cutting saw carried by said frame and arranged longitudinally thereof, means for moving the carriage toward the saw for cutting the product, means for ejecting the waste portion longitudinally of the frame, and means for ejecting the cut product from the aforesaid pocket at the side of the frame where the stock is inserted.

The combination with a frame, of a longitudinally movable carriage having a transversely disposed pocket therein for receiving the stock from one side thereof, a tubular cutting saw carried by said frame and arranged longitudinally thereof, means for adiusaibly centering the stock in the aforesaid pocltet with relation to the cutting saw, means for moving the carriage toward ,.aw, for cutting the product, means ina plunger carried by the saw for y ejecting the waste portion cut from cl; longitudinally of the machine, and means tor positively engaging the edge of the cut product for ejecting the same in its own plane from the aforesaid pocket at the side of the frame where the stock is insorted.

e combination with a frame, of a longitudinz tlly movable carriage having a transversely di-posed pocket therein, for receiving the stool: from one side thereof, a tubular cuttin saw carried by said frame and arranged longitudinally thereof, means for adjustably centering the stock in the orcsaid pocket with relation to the cutting aw, means for moving the carriage with therein toward the saw for cutting le itudinally movable carriage having a transversely deposed pocket therein for receiving he stock from one side thereof, a cutting saw mounted on said frame, means for positionin' the stock in the aforesaid "cachet and transversely of the cutting saw, an. for reciprocating the carriage toward the saw for cutting the product, means for forcibly ejecting the waste portion in axial aiinement with the cutti g saw at the end of tie said reciprocation, means for reciprocating the carriage in the opposite direction, and means for positively ejecting the cut product in its own plane at the side of of the carriage.

5. A sawing machine of the class described comprising a work supporting carriage having spaced partitions arranged in said carriage and designed to form a transverse stock receiving pocket, openings provided in said partitions and arranged longitudinally of the machine, a tubular saw arranged to longitudinally enter one of said openings and cut the product therein contained, means for longitudinally and forcibly ejecting the waste portion cut through the other of said openings, and means including plunger for engaging the edge of the cut product for positively ejecting the same in its own plane from the aforesaid pocket.

6, A sawing machine of the class described comprising a work supporting carriage having spaced partitions arranged in said carriage and designed to form a stock receiving pocket formed with a side opening therein, openings provided in said partitions, guides extending into said pocket for positioning the stock therein, a stop for limiting the lateral movement of the stock therein, means for adjusting said guides and aforesaid stop, a tubular saw arranged to enter the opening in one of the aforesaid partitions and cut the product therein contained, means for longitudinally ejecting the waste portion cut through the opening in the other of said partitions, and means for engaging the edge of the cut product for positively ejecting the same in its own plane through the side opening in the pocket.

7. A. sawing machine of the class described comprising a work supporting carriage having spaced partitions arranged in said carriage and designed to form a stock receiving pocket, openings provided in said partitions, oppositely arranged guide bars extending into said pocket for positioning the stock therein, means for limiting the lateral movement of the stock in the pocket, said means comprising detachable bracket and adjustable stop rod carried thereby, a tubular saw arranged to enter one of the aforesaid openings in one of the partitions and cut the product therein contained, means for forcibly ejecting the waste portion cut through the other of said openings in the other partition, and a chute for conveying the waste product to one side.

8. The combination with a frame, of a longitudinally movable carriage having a transversely disposed pocket therein for receiving the stock to be cut, a cutting saw longitudinally mounted in said frame, means for centrally positioning the stock in the aforesaid pocket and transversely of the cutting saw, means for reciprocating said carriage longitudinally, and means for successively and positively ejecting the Waste portion and out product from the aforesaid pocket at longitudinal and lateral points, respectively, during such reciprocation.

9. A hole sawing machine of the class described including in combination a frame, a longitudinally movable carriage having a transversely disposed pocket therein for receiving the stock from one side thereof, a tubular cutting saw carried by said frame and arranged longitudinally thereof, and mea s for adjustably centering the stock in the aforesaid pocket with relation to the cutting saw, said means comprising a detachahle bracket and adjustable stop rod carried thereby, means for moving the car riage with the stock therein toward the saw for cutting the product, means for e ecting the waste portion cut from the stock axially of the cutting saw, and means including a transversely operating plunger mounted on the carriage and playing through the aforesaid hracket for positively ejecting the cutproduct in its own plane from the aforesaid pocket at the side of the frame where the stock is inserted.

10. In a hole sawing machine the combination with a reciprocating work support comprising a transverse guideway or pocket, means for cutting and ejecting a portion of the work and means for ejecting the remainder thereof in its own plane comprising a plunger for forcing said product from the work supporting carriage, a lever for actuating said plunger, and a cam for op erating the aforesaid lever.

In testimony whereof I afiix my signature.

SILAS S. SEE. v 

